Ultrasonic positioning visual needle knife

Abstract

The invention belongs to the technical field of medical instruments, and discloses an ultrasonic positioning visual needle knife which comprises a holding part, a control part and a needle knife body, and the holding part is connected with the needle knife body. The needle knife comprises a hollow needle knife rod and a scissor-type cutting blade, the control part comprises a push-pull button, a connecting rod and a rack, the connecting rod in the needle knife rod can be controlled to move by operating the push-pull button, so that the scissor-type cutting blade at the front end of a needle knife head is exposed, an ultrasonic echo enhancement point is designed on the cutting blade, and it can be guaranteed that the cutting blade is clearly visible under ultrasound; the problem that in the prior art, developing is not sufficient under B ultrasound when a needle knife is operated is solved, a fixed cutting blade at the front end of the needle knife is changed into a scissor type cutting blade, it is guaranteed that the soft tissue is limited and fixed during operation, the opening and closing design of the front end of the needle knife head reduces secondary damage to the soft tissue during puncture, and the working efficiency is improved. And the treatment effect of the ultrasonic needle knife is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an ultrasound-positioned visualized needle knife. Background Art

[0002] At present, needle knife therapy is mainly used for soft tissue injury and bone and joint lesions. It is a closed release method between surgical methods and non-surgical treatments. It inserts deep into the treatment site to quantitatively release the lesion tissue to achieve the purpose of pain relief and disease treatment. However, the blade at the front end of the needle knife in the existing technology is mostly an integrated, fixed structure. When removing the lesion tissue, it is necessary to push the needle knife and use the front blade to remove the lesion tissue. This removal method lacks fixed restrictions on soft tissue and is prone to removal errors.

[0003] Therefore, there is a need for a needle knife that can limit soft tissue during resection and further enhance the ultrasound imaging capability. Summary of the invention

[0004] The present invention aims to provide an ultrasound-positioned visualized needle knife to solve the problem of insufficient visualization under B-ultrasound when the needle knife is operated in the prior art, and changes the front end of the needle knife from a fixed cutting piece to a scissors-type cutting piece to ensure that the soft tissue is restricted and fixed during operation. The opening and closing design of the front end of the needle knife head reduces the secondary damage to the soft tissue during puncture, thereby improving the treatment effect of the ultrasonic needle knife.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An ultrasonically positioned visualized needle knife comprises a gripping portion, the front end of which is connected to a needle knife, the needle knife comprising a hollow needle knife rod and a cutting piece, the front end of the hollow needle knife rod is rotatably connected to the cutting piece via a rotating shaft, the cutting piece and the hollow needle knife rod are both connected to a blade, the cutting piece is provided with a plurality of ultrasonic echo enhancement points, a connecting rod is slidably fitted inside the hollow needle knife rod, a rack is connected to the front end of the connecting rod, a gear is coaxially connected to the rotating shaft, the rack meshes with the gear, the tail end of the connecting rod is passed through the gripping portion and is connected to a push-pull button, the push-pull button is slidably connected to the top of the gripping portion, a spring is provided inside the gripping portion, and the spring is sleeved at the tail end of the connecting rod.

[0007] Furthermore, a plurality of ultrasonic echo enhancement points are also arranged on the outer side wall of the front end of the hollow needle knife rod. The number of ultrasonic echo enhancement points on the cutting sheet is plural, and the number of ultrasonic echo enhancement points on the outer side wall of the front end of the hollow needle knife rod is singular.

[0008] Furthermore, a blade is connected to one end of the cutting disc close to the gripping portion, and the length of the blade is two-thirds of the length of the cutting disc.

[0009] Furthermore, the blade is detachably connected to the cutting disc.

[0010] Furthermore, the maximum opening angle of the cutting blade is limited to 15 degrees.

[0011] The principle of the technical solution is: when the needle knife is inserted into the human body, the front cutting piece is merged and in a closed state. The ultrasonic echo enhancement point at the front end of the needle knife can effectively display the position of the cutting piece and the front end of the hollow needle knife rod. When performing resection, the connecting rod is pushed forward, and the rack moves forward to drive the gear to rotate, thereby controlling the cutting piece to rotate outward at a limited angle and open. At this time, it is in an open state. The needle knife is moved so that the tissue to be resected is located at the angle where the cutting piece is opened. Continuing to push forward can achieve resection of the diseased tissue, and then pulling the control rod backward will make the cutting piece close again, and it can be returned to the position of the diseased tissue that needs to be resected for another resection.

[0012] The beneficial effects of the basic technical solution are: when the device penetrates into the human body, the blade is in a closed state, and the front end of the needle knife and the outside of the cutting piece form a shape that is conducive to puncture, which can effectively reduce damage to human tissue; after penetrating the inside, the ultrasonic echo enhancement point can clearly display the position of the blade, facilitating subsequent operations; when cutting, the open cutting piece and the front end of the needle knife clamp the tissue to be removed, which can effectively limit and fix the tissue to be removed, thereby effectively improving the success rate of tissue removal; when the needle knife is pulled out, the cutting piece is closed to avoid secondary damage to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a closed state structural diagram of the present invention;

[0014] Figure 2 Open the state structure diagram for the present invention;

[0015] Figure 3 This is an enlarged view of the front end of the needle knife of the present invention;

[0016] Figure 4 This is a cross-sectional view of the front end of the needle knife of the present invention;

[0017] Figure 5 is an internal cross-sectional view of the grip portion of the present invention;

[0018] The names of the corresponding marks in the accompanying drawings are: holding part 1, needle knife 2, hollow needle knife rod 3, rotating shaft 4, cutting piece 5, connecting rod 6, spring 11, gear 41, blade 51, ultrasonic echo enhancement point 52, rack 61, push-pull button 62. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0020] like Figure 1-Figure 4As shown, an ultrasound-localized visualized needle knife comprises a gripping portion 1, a needle knife 2 is connected to the front end of the gripping portion 1, the needle knife 2 is composed of a hollow needle knife rod 3 and a cutting blade 5, the front end of the hollow needle knife rod 3 is an inclined structure, the front end of the hollow needle knife rod 3 is rotatably connected to the cutting blade 5 through a rotating shaft 4, the front end of the cutting blade 5 is also an inclined structure, two ultrasonic echo enhancement points 52 are arranged on the cutting blade 5, the outer side wall of the front end of the hollow needle knife rod 3 is arranged with three ultrasonic echo enhancement points 52, the lower side of the cutting blade 5 is detachably connected to a blade 51, the length of the blade 51 is the length of the cutting blade 5 Two-thirds of it is arranged at one end close to the holding part 1, and a blade 51 is also connected to the front end of the hollow needle knife rod 3. The two blades 51 are of the same length and are staggered. The rotating shaft 4 is coaxially connected to the gear 41, and a connecting rod 6 is slidably fitted inside the hollow needle knife rod 3. The front end of the connecting rod 6 is connected to a rack 61, and the rack 61 is meshed with the gear 41. The tail end of the connecting rod 6 is passed through the interior of the holding part 1, and the tail end of the connecting rod 6 is connected to a push-pull button 62. The part of the connecting rod 6 located inside the holding part 1 is sleeved with a spring 11, and the push-pull button 62 is slidably connected to the outside of the holding part 1.

[0021] The implementation process is as follows:

[0022] In the initial state, the cutting blade 5 is in a closed state. At this time, the cutting blade 5 and the front end of the hollow needle knife rod 3 form a shape that is conducive to puncture. The front end of the needle knife 2 is inserted into the human body through the gripping part 1, and is developed using an external ultrasonic device. The position of the cutting blade 5 and the front end of the hollow needle knife rod 3 can be clearly displayed on the ultrasonic device. The push-pull button 62 is pushed forward, the connecting rod 6 moves forward, and the rack 61 on the front side of the connecting rod 6 also moves forward. The movement of the rack 61 drives the gear 41 to rotate. The gear 41 is coaxially connected to the rotating shaft 4, and the gear 41 drives the rotating shaft 4 to rotate, so that the cutting blade 5 is rotated outward to open. After the cutting blade 5 is opened outward, the gripping part 1 is controlled so that the tissue part to be removed is located at the angle where the blade 51 is opened, and then the push-pull button 62 is pulled backward to close the cutting blade 5 inward. During the closing process, the blade 51 removes the tissue in a scissors-like cutting manner. After the removal is completed, the needle knife 2 is taken out in the closed state.

[0023] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An ultrasound-guided visual acupotomy, characterized in that: The invention comprises a gripping portion (1), the front end of which is connected to a needle knife (2), the needle knife (2) comprising a hollow needle knife rod (3) and a cutting blade (5), the front end of the hollow needle knife rod (3) being rotatably connected to the cutting blade (5) via a rotating shaft (4), the cutting blade (5) and the hollow needle knife rod (3) being both connected to a blade (51), the two blades (51) being arranged in a staggered manner, the cutting blade (5) being provided with a plurality of ultrasonic echo enhancement points (52), the hollow needle knife rod (3) being internally slidingly attached to the cutting blade (51) and the cutting blade (51) being arranged in a staggered manner, A connecting rod (6) is provided, the front end of the connecting rod (6) is connected to a rack (61), the rotating shaft (4) is coaxially connected to a gear (41), the rack (61) is meshed with the gear (41), the tail of the connecting rod (6) is passed through the inside of the holding part (1) and is connected to a push-pull button (62), the push-pull button (62) is slidably connected to the top of the holding part (1), and a spring (11) is provided inside the holding part (1), and the spring (11) is sleeved on the tail of the connecting rod (6).

2. The ultrasound-guided visual acupotomy according to claim 1, characterized in that: A plurality of ultrasonic echo enhancement points (52) are also provided on the outer side wall of the front end of the hollow needle knife rod (3); the ultrasonic echo enhancement points (52) on the cutting blade (5) are plural, and the ultrasonic echo enhancement points (52) on the outer side wall of the front end of the hollow needle knife rod (3) are singular.

3. The ultrasound-guided visual acupotomy according to claim 1, characterized in that: The blade (51) is connected to the cutting disc (5) and one end of the hollow needle blade rod (3) close to the holding portion (1), and the length of the blade (51) is two thirds of the length of the cutting disc (5).

4. The ultrasound-localized visualized acupotomy according to claim 1, characterized in that: The blade (51) is detachably connected to the cutting blade (5).

5. The ultrasound-localized visualized acupotomy according to claim 1, characterized in that: The maximum opening angle of the cutting blade (5) is limited to 15 degrees.

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